CVE-2021-0423 : Security Advisory and Response

A vulnerability has been identified in memory management driver of certain MediaTek devices that could lead to information disclosure without the need for additional execution privileges.

Understanding CVE-2021-0423

This CVE record highlights an information disclosure vulnerability affecting a range of MediaTek chipsets running Android 10.0 and 11.0.

What is CVE-2021-0423?

The vulnerability in the memory management driver of the affected MediaTek devices could allow unauthorized disclosure of sensitive information without requiring user interaction.

The Impact of CVE-2021-0423

Exploitation of this vulnerability could result in local information disclosure, posing a potential risk to user privacy and data security.

Technical Details of CVE-2021-0423

The technical details of CVE-2021-0423 are as follows:

Vulnerability Description

A possible information disclosure occurs due to uninitialized data in the memory management driver, which could be exploited locally.

Affected Systems and Versions

The vulnerability impacts a wide range of MediaTek chipsets including MT6580, MT6752, MT6795, and more running Android 10.0 and 11.0.

Exploitation Mechanism

The vulnerability allows malicious actors to access sensitive information without requiring any additional user privileges or interactions.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-0423, consider implementing the following steps:

Immediate Steps to Take

Apply security patches provided by MediaTek to address the vulnerability.
Monitor for any unusual activities that may indicate exploitation of the vulnerability.

Long-Term Security Practices

Keep your device up to date with the latest security patches and firmware updates.
Regularly review security bulletins from chipset vendors for potential vulnerabilities.

Patching and Updates

Stay informed about security updates from MediaTek and apply them promptly to protect your device from known vulnerabilities.